version 1.10, 1996/09/30 13:16:07
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version 1.18, 1998/04/12 21:49:12
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Line 32
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Line 32
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require struct.fs |
require struct.fs |
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struct |
struct |
1 cells: field buffer-block \ the block number |
cell% field buffer-block \ the block number |
1 cells: field buffer-fid \ the block's fid |
cell% field buffer-fid \ the block's fid |
1 cells: field buffer-dirty \ the block dirty flag |
cell% field buffer-dirty \ the block dirty flag |
chars/block chars: field block-buffer \ the data |
char% chars/block * field block-buffer \ the data |
0 cells: field next-buffer |
cell% 0 * field next-buffer |
end-struct buffer-struct |
end-struct buffer-struct |
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Variable block-buffers |
Variable block-buffers |
Line 46 $20 Value buffers
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Line 46 $20 Value buffers
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User block-fid |
User block-fid |
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: block-cold |
: block-cold ( -- ) |
defers 'cold block-fid off last-block off |
block-fid off last-block off |
buffers buffer-struct drop * allocate throw dup block-buffers ! |
buffer-struct buffers * %alloc dup block-buffers ! ( addr ) |
buffers buffer-struct drop * erase ; |
buffer-struct %size buffers * erase ; |
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' block-cold IS 'cold |
' block-cold INIT8 chained |
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block-cold |
block-cold |
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Defer flush-file |
Defer flush-blocks |
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: use-file ( addr u -- ) \ gforth |
: open-blocks ( addr u -- ) \ gforth |
\g use the file, whose name is given by @var{addr u}, as blocks file |
\g use the file, whose name is given by @var{addr u}, as blocks file |
2dup ['] open-path-file catch 0<> |
2dup open-fpath-file 0<> |
if |
if |
2drop r/w bin create-file throw |
r/w bin create-file throw |
else |
else |
rot close-file throw 2dup file-status throw bin open-file throw |
rot close-file throw 2dup file-status throw bin open-file throw |
>r 2drop r> |
>r 2drop r> |
then |
then |
block-fid @ IF flush-file block-fid @ close-file throw THEN |
block-fid @ IF flush-blocks block-fid @ close-file throw THEN |
block-fid ! ; |
block-fid ! ; |
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: use ( "file" -- ) \ gforth |
: use ( "file" -- ) \ gforth |
\g use @var{file} as blocks file |
\g use @var{file} as blocks file |
name use-file ; |
name open-blocks ; |
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\ the file is opened as binary file, since it either will contain text |
\ the file is opened as binary file, since it either will contain text |
\ without newlines or binary data |
\ without newlines or binary data |
: get-block-fid ( -- fid ) |
: get-block-fid ( -- fid ) |
block-fid @ 0= |
block-fid @ 0= |
if |
if |
s" blocks.fb" use-file |
s" blocks.fb" open-blocks |
then |
then |
block-fid @ ; |
block-fid @ ; |
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Line 111 Defer flush-file
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Line 111 Defer flush-file
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save-buffers |
save-buffers |
empty-buffers ; |
empty-buffers ; |
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' flush IS flush-file |
' flush IS flush-blocks |
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: get-buffer ( n -- a-addr ) |
: get-buffer ( n -- a-addr ) |
buffers mod buffer-struct drop * block-buffers @ + ; |
buffers mod buffer-struct %size * block-buffers @ + ; |
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: block ( u -- a-addr ) |
: block ( u -- a-addr ) |
dup 0= -35 and throw |
dup 0= -35 and throw |
Line 164 User scr 0 scr !
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Line 164 User scr 0 scr !
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: load ( i*x n -- j*x ) |
: load ( i*x n -- j*x ) |
push-file |
push-file |
dup loadline ! blk ! >in off ( ['] ) interpret ( catch ) |
dup loadline ! blk ! >in off ['] interpret catch |
pop-file ( throw ) ; |
pop-file throw ; |
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: thru ( i*x n1 n2 -- j*x ) |
: thru ( i*x n1 n2 -- j*x ) |
1+ swap 0 ?DO I load LOOP ; |
1+ swap ?DO I load LOOP ; |
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: +load ( i*x n -- j*x ) blk @ + load ; |
: +load ( i*x n -- j*x ) blk @ + load ; |
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: +thru ( i*x n1 n2 -- j*x ) |
: +thru ( i*x n1 n2 -- j*x ) |
1+ swap 0 ?DO I +load LOOP ; |
1+ swap ?DO I +load LOOP ; |
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: --> ( -- ) refill drop ; immediate |
: --> ( -- ) refill drop ; immediate |
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: block-included ( addr u -- ) |
: block-included ( addr u -- ) |
block-fid @ >r block-fid off use-file |
block-fid @ >r block-fid off open-blocks |
1 load block-fid @ close-file throw flush |
1 load block-fid @ close-file throw flush |
r> block-fid ! ; |
r> block-fid ! ; |
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: include ( "name" -- ) |
\ thrown out because it may provide unpleasant surprises - anton |
name 2dup dup 3 - /string s" .fb" compare |
\ : include ( "name" -- ) |
0= IF block-included ELSE included THEN ; |
\ name 2dup dup 3 - /string s" .fb" compare |
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\ 0= IF block-included ELSE included THEN ; |
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get-current environment-wordlist set-current |
get-current environment-wordlist set-current |
true constant block |
true constant block |
true constant block-ext |
true constant block-ext |
set-current |
set-current |
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: bye ['] flush catch drop bye ; |
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: bye ['] flush catch drop bye ; |